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Table 1 Characteristics of studies included

From: Tranexamic acid given into wound reduces postoperative drainage, blood loss, and hospital stay in spinal surgeries: a meta-analysis

Ref.

First Author

Country

Year

Size(E/C)

Design

Procedures

tTXA Regimen

Qualitya

20

Claus

Norway

2003

16/14

RCT

Operations for low back pain

500 mg TXA added into 50 ml 0.9% NS

7

21

Hoshang

Iran

2010

50/50

RCT

One/two level laminectomy

250 mg TXA added into 5 ml 0.9% NS

8

22

Liang

China

2016

30/30

RCT

Multilevel posterior lumbar degenerative procedures

2000 mg TXA (in 20 ml 0.9% NS) soaked Gelfoam (100 cm2)

7

29

Ren

China

2017

50/50

nRCT

Posterior lumbar spinal fusion surgery

1 g TXA added into 100 ml 0.9% NS

7

30

Zhinan

China

2017

50/50

nRCT

Posterior lumbar spinal fusion surgery

1 g TXA added into 100 ml 0.9% NS

7

23

Xu

China

2017

40/40

RCT

Total laminectomy with pedicle screw instrumentation

1 g TXA added into 100 ml 0.9% NS

8

24

Mu

China

2019

39/42

RCT

Posterior lumbar interbody fusion

1 g TXA (in 50 ml 0.9% NS) soaked gelatin sponge

7

25

Wood

USA

2018

12/17

RCT

Spinal surgery

3 g TXA irrigated in the wound prior to closure

7

31

Liang

China

2020

20/20

nRCT

Posterior lumbar decompression and fusion

1 ampoule (10% transamin, 10 ml, 1000 mg TXA; Daiichi-Sankyo, Tokyo, Japan)

7

26

Weera

Thailand

2019

29/28

RCT

Long-segment instrumented fusion without decompression

1 g TXA added into 20 ml 0.9% NS

7

27

Xu

China

2020

30/30

RCT

Posterior lumbar interbody fusion

1 g TXA added into 100 ml 0.9% NS

7

32

Weera

Thailand

2018

35/38

nRCT

Long-segment instrumented fusion without decompression

1 g TXA added into 20 ml 0.9% NS

7

28

Han

China

2019

48/24

RCT

Multilevel thoracolumbar bone graft fusion and internal fixation

500 mg/1000 mg TXA added into 100 ml 0.9% NS

7

  1. Ref., reference; E/C, experimental group/control group; RCT, randomized control trial; nRCT, non-randomized control trial; tXA, topical use of tranexamic acid. a Study quality assessed using the Newcastle-Ottawa Scale (NOS)